feat(client): make dir()/help() work through _SyncProxy

The sync REPL proxy forwarded methods via __getattr__, so dir()/tab-completion never saw them and the sync wrapper reported (*args, **kwargs) instead of the real signature. Add __dir__ delegating to the wrapped target, and decorate the async wrapper with functools.wraps so inspect.signature()/help() report the real params + docstring.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

pm3py/core/client.py

@@ -1,5 +1,6 @@
 """Main Proxmark3 client with nested API."""
 import asyncio
+import functools
 import glob
 import inspect
 import logging
@@ -161,13 +162,20 @@ class _SyncProxy:
         if hasattr(attr, '_t'):
             return _SyncProxy(attr, self._loop)
         if callable(attr) and inspect.iscoroutinefunction(attr):
+            # functools.wraps copies __doc__/__name__ AND sets __wrapped__, so
+            # inspect.signature() and help() report the real params (block, uid=None)
+            # instead of the wrapper's (*args, **kwargs).
+            @functools.wraps(attr)
             def sync_wrapper(*args, **kwargs):
                 return self._loop.run_until_complete(attr(*args, **kwargs))
-            sync_wrapper.__name__ = name
-            sync_wrapper.__doc__ = attr.__doc__
             return sync_wrapper
         return attr
 
+    def __dir__(self):
+        # Surface the wrapped target's command methods and sub-modules so
+        # dir()/REPL tab-completion and help() discovery work through the proxy.
+        return sorted(set(object.__dir__(self)) | set(dir(self._target)))
+
     def close(self):
         """Disconnect and close the event loop."""
         self._loop.run_until_complete(self._target.disconnect())